The "Snowshoe" release, marked v1.11 in the Ringio Desktop and Ringio Mobile software was made available to production customers on 12/22/2011.

Major New Features

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Contains new filtering parameters for the Contacts feed, which can be found here.
Format of dates are now ISO, E.g.: "date_created": "2010-05-10T00:00:00.000Z",
Complete list of Developer API changes can be found here

Cool Enhancements

When a user signs into the Ringio software for the very first time, they will see a 60 second getting started video that shows them how to start making outgoing calls. Learn by watching! Check out the support forum http://support.ringio.com/ for more getting started videos.
Now, it's possible to transfer calls to an external phone number directly by simply typing in the external phone number (instead of having to create a contact).

You can now delete a personal voicemail through the Ringio application. Once you delete a voicemail, it's gone for good. Ringio will still show a record that you received a voicemail with the date and time. Team voicemails cannot be deleted.

We improved the voice quality of voicemail audio files. Voicemails now sound cleaner, crisper without the breathy or echo sounds.
(Existing customers only) The user addition process has been simplified. You no longer have to invite a user to grant them access to the Ringio software.
We improved the usability of Mute and Hold while you are on a Ringio call and removed some one-way audio/dropped call issues.

Better contact matching - sometimes a second number saved for a contact won't match a caller or a caller would be greeted with the wrong name. Now Ringio correctly matches all of the phone numbers associated with a contact.
Google Contact Sync now has improved reliability and stability. We fixed the following bugs:

Extra phone number exists when user edits phone number
Ringio desktop phone number is not same as Google after a user deletes a number from Ringio desktop
Extra data appears in Google after sync when user edits Email/IM/Website/Address from Ringio desktop
Duplicate and incorrect address when syncing from Ringio to Google
Some cases where notes didn't sync from Google to Ringio
Sometimes couldn't delete business name/title in Google contacts after sync from Ringio desktop

Custom greetings now work even when all the departments are removed.
Improved navigation after saving a note.
We fixed an issue where sometimes a person could not open some Ringio Desktop windows when already on a live Ringio call.